package com.zzw.utils;

import javax.servlet.http.HttpServletRequest;

public class GetIPAddr {

	public static String getIpAddr(HttpServletRequest request)  {
         String ip  =  request.getHeader( "x-forwarded-for" );
         if (ip  ==   null   ||  ip.length()  ==   0   ||   "unknown" .equalsIgnoreCase(ip))  {
        	 ip  =  request.getHeader( "Proxy-Client-IP" );
         } 
         if (ip  ==   null   ||  ip.length()  ==   0   ||   "unknown" .equalsIgnoreCase(ip))  {
             ip  =  request.getHeader( "WL-Proxy-Client-IP" );
         } 
         if (ip  ==   null   ||  ip.length()  ==   0   ||   "unknown" .equalsIgnoreCase(ip))  {
             ip  =  request.getRemoteAddr();
         }
         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        	  ip = request.getHeader("http_client_ip");
         }
         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        	  ip = request.getHeader("HTTP_X_FORWARDED_FOR");
         }
         if (ip != null && ip.indexOf(",") != -1) {
        	  ip = ip.substring(ip.lastIndexOf(",") + 1, ip.length()).trim();
         }
         return  ip;
	}
}
